US 12,282,600 B1
Wearable haptic devices for modulating perceived roughness of physical surfaces in real-time simulation in mixed reality environments
Kening Zhu, Hong Kong (HK); Xinge Yu, Hong Kong (HK); Shaoyu Cai, Hong Kong (HK); Haichen Gao, Hong Kong (HK); and Qi Zhang, Hong Kong (HK)
Assigned to City University of Hong Kong, Hong Kong (HK)
Filed by City University of Hong Kong, Hong Kong (HK)
Filed on Feb. 19, 2024, as Appl. No. 18/581,360.
Int. Cl. G06F 3/01 (2006.01); G06T 19/00 (2011.01)
CPC G06F 3/014 (2013.01) [G06F 3/016 (2013.01); G06T 19/006 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A wearable haptic modulation device for real-time simulation of texture properties of a material surface in a mixed reality environment, comprising:
a U-shaped pneumatic actuator, configured to surround a fingertip of a user, wherein the U-shaped pneumatic actuator is a multilayer structure with an inflatable non-cured chamber for air-filling;
a finger-housing support, configured to create a space for containing the fingertip;
a resonant actuator, positioned on the finger-housing support to generate a vibrotactile feedback for increasing a perceived roughness of a touched physical surface; and
a pneumatic control system, configured to generate a pneumatic actuation and connected to the U-shaped pneumatic actuator and the resonant actuator;
wherein the U-shape pneumatic actuator exposes the fingerpad of the fingertip, so that the user's fingerpad directly contacts with the touched physical surface;
wherein the U-shape pneumatic actuator is inflatable so as to lift the fingerpad and decrease the perceived roughness of the touched physical surface.